Home Chemistry Chemical Kinetics General In any unimolecular reaction:
Chemistry Chemical Kinetics General Single Correct MCQ
Published on: August 12, 2026

In any unimolecular reaction:

A
Only one reacting species is involved in the rate determining step.
B
The order and the molecularity of slowest step are equal to one.
C
The molecularity of the reaction is one and order is zero.
D
Both molecularity and order of the reaction are one.

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The correct answer is:
CHECK THE SOLUTION.

Since, the reaction is an unimolecular reaction. Hence, in the slowest step i.e., in the rate

determining step the only one reacting species is involved. Therefore, order of reaction and molecularity of reaction is equal to one.

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